More renaming, experimental `sample()` methods. * Both `Die` and `Deck` now have `quantities` rather than `weight`, `dups`, etc. * Many `Die` methods moved to base class and are now available to `Deck`. * "Eval" is now the full word "Evaluator". * Parameter and method names are no longer prefixed with "num_". * `reduce_weights` renamed back to `reduce`. * `Deck`s can be formatted like `Die`. * Allow formatting 0-1 probability. * Experimental `sample()` methods for `OutcomeCountGenerator` and `OutcomeCountEvaluator`.